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# Senior Java Developer especializado

- **Company:** Krell Consulting
- **Location:** San Fernando de Henares, Spain
- **Salary:** €65,000.0 - €90,000.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Application Programming Interfaces (APIs), Apache Tomcat, Oracle WebLogic Server, Code Review, Databases, Continuous Integration, Java Platform Enterprise Edition (J2EE), Hibernate (Java), Java Database Connectivity, Java Persistence API, Java Naming and Directory Interface, Junit, Oracle Databases, Mockito, Service-Oriented Architecture, SQL Databases, Backend, Git, Software Version Control
- **Published:** August 29, 2026
- **Apply:** https://www.jobleads.com/es/job/ed96f5a2a591a13cd03bcd8346896f2fc

## About the Role

* Al menos 5 años de experiencia en desarrollo Java Backend en entornos enterprise.
 * Al menos 2 años de experiencia en sistemas transaccionales críticos, de alta disponibilidad y/o alto volumen.
 * Java 8 y Java 11.
 * JavaEE / J2EE.
 * Experiencia práctica con Apache Tomcat 9.
 * Oracle WebLogic Server 11g o superior.
 * Oracle Database 19c.
 * SQL.
 * JDBC y/o ORM.
 * Git.
 * Inglés mínimo B2. Será necesario acreditar el nivel mediante certificación, evaluación o prueba equivalente.
 * Grado universitario o FP de Grado Superior., * Experiencia en medios de pago.
 * EJB 3.0.
 * Hibernate / JPA.
 * JAX-RS.
 * Arquitecturas orientadas a servicios.
 * Clean Code y principios SOLID.
 * JUnit y Mockito.
 * CI/CD.
 * Experiencia en soporte de entornos 24x7.

Buscamos un perfil senior acostumbrado a trabajar con aplicaciones críticas y entornos enterprise de alta disponibilidad.

## Description

En KRELL Consulting buscamos un/a Senior Java Developer especializado/a en entornos JavaEE para participar en un proyecto tecnológico relacionado con sistemas transaccionales críticos y medios de pago., * Desarrollo y mantenimiento de servicios backend orientados a integración.

 * Implementación de APIs y endpoints.
 * Gestión de errores, validaciones, timeouts y trazabilidad.
 * Despliegue y operación sobre Apache Tomcat 9 y Oracle WebLogic.
 * Configuración de DataSources/JNDI y gestión de recursos.
 * Troubleshooting.
 * Integración con Oracle Database 19c mediante SQL y JDBC/ORM.
 * Gestión transaccional.
 * Colaboración con equipos de bases de datos.
 * Control de versiones con Git.
 * Participación en code reviews y procesos de release.


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